GTMOTO D4S HID Bulbs for Lexus ES350 (2007–2015) 6000K 35W Daylight Low‑Beam Pair

These GTMOTO D4S xenon HID bulbs are a direct low‑beam replacement for 2007–2015 Lexus ES350 headlights, delivering brighter 6000K daylight illumination in an OEM D4S-C1 fitting.

Replace faded or yellowed low‑beam lamps with this two‑piece GTMOTO D4S HID bulb set designed to pair with the external ballast used in factory bi‑xenon headlight systems. Built from anti‑UV quartz glass, stainless brackets, and ceramic insulators, the bulbs fit standard D4S sockets and give a cooler 6000K white light that improves perceived contrast and road visibility compared with worn 4300K units. Note: these are HID xenon capsules for vehicles with D4S ballast systems and will not work in traditional 12V halogen fixtures.

Will these bulbs fit my 2007–2015 Lexus ES350 low beam?

Yes, these GTMOTO bulbs are manufactured to the D4S‑C1 specification used on Lexus ES350 bi‑xenon low‑beam projectors from model years 2007 through 2015. They are a plug‑in swap for vehicles that already use replaceable D4S xenon capsules.

• Compatibility: Lexus ES350 (2007–2015) low‑beam D4S projectors
• OEM standard: D4S‑C1 xenon capsule dimensions and pins
• Not compatible: halogen sockets (H7, H11, 9006 types) or single‑beam halogen systems

How much brighter and what color temperature do these bulbs produce?

The GTMOTO D4S bulbs are rated at 35W and produce a 6000K crisp white light that appears noticeably whiter than older 4300K xenon bulbs. Brightness improvement and a cooler color temperature help improve contrast and make road signs and lane markings easier to see without changing beam pattern.

• Power: 35W xenon capsule (requires ballast)
• Color temperature: 6000K daylight white
• Performance: claimed ~1.5× perceived brightness versus aged stock units

What materials and build features ensure durability?

GTMOTO constructs these bulbs using laser‑cut anti‑UV quartz glass to resist discoloration, stainless steel mounting brackets for secure fit, and ceramic insulating tubes for thermal stability. The design aims to match factory quality for fit and long‑term use when paired with a compatible ballast.

• Glass: anti‑UV quartz to reduce yellowing over time
• Hardware: stainless metal bracket for reliable mounting
• Insulation: ceramic tube for electrical and heat resistance

How easy is installation and what should I check before buying?

Installation is intended to be a straightforward plug‑and‑play replacement if your vehicle already has D4S xenon sockets and a functioning ballast. Swap the old capsule for the new D4S‑C1 unit and secure the bracket; no headlight housing modification is required. Before purchasing, confirm your ES350 uses replaceable D4S xenon bulbs rather than sealed halogen lamps.

• Installation time: approximately 10 minutes per side for most owners
• Requirement: existing xenon ballast and D4S socket (42VAC xenon system)
• Not for: 12V filament halogen bulbs (e.g., H7, H11, 9006) without conversion

Who is this for: The GTMOTO D4S pair is aimed at Lexus ES350 owners (2007–2015) who want to restore cooler, brighter low‑beam lighting without replacing the entire headlamp assembly. It’s a fit for drivers with factory xenon projectors seeking an OEM‑style replacement capsule, DIY enthusiasts comfortable swapping bulbs, and anyone wanting improved white light color and refreshed appearance from their front lamps. Do not buy if your vehicle uses traditional halogen bulbs or if you lack the required xenon ballast system.